package com.qk.interceptor;

import com.qk.utils.JwtUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

@Component
@Slf4j
public class TokenInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        //1.获取请求路径
        String uri = request.getRequestURI();  //depts , /users , /login
        //2.判断是否是登录请求， 如果是，放行
        if (uri.contains("/login")) {  //登录 ，放行
            log.info("登录请求: {},放行", uri);
            return true;
        }

        //3.获取请求头 token
        String jwt = request.getHeader("token");
        //4.判断token是否存在，如果不存在，响应401状态码
        if (jwt == null || jwt.isEmpty()) {
            log.info("请求头token不存在");
            response.setStatus(401);
            return false;
        }

        //5.解析令牌，如果解析令牌报错，响应401状态码
        try {
            JwtUtils.parseToken(jwt);
        } catch (Exception e) {
            log.info("令牌解析失败");
            response.setStatus(401);
            return false;
        }
        return true;
    }
}
